Check-lock for mining-cars.



. G. A. LL,- GHEGK LOGKI'O INING CARS.

APPLI- 000000000000000000000 s.

z r% I2 PATENTED MAR. 26,1907.

UNITED STATES PATENT orrion.

CHECK-LOCK FOR MINING-CARS.

Specification of Letters Patent.

.Eatented March .26, 1907.

' Ap lication filed August 25,1906. Serial No. 332,062.

To all whom it may concern.-

Be it known that I, CHARLES A. CABELL, a citizen of the United States,residing at Carbon, in the county of Kanawha and State of West Virginia,have invented new and useful Improvements in Check-Locks for Mining-Cars, of which the following is a specification.

This invention relates to checklocks for mining-cars; and one of theprincipal objects of the same is to provide efficient and reliable meansfor holding the check within the look, so that it cannot besurreptitiously removed.

Another object of my invention is to provide simple and easily-operatedmeans for holding the check in locked position until the car is tippedto discharge its load, at which time the check may be readily removedfrom the lock.

These and other objects are attained by means of the constructionillustrated in the accompanying drawings, in which'- Figure l is a frontelevation of a checklock made in accordance with my invention. andhaving the check secured thereto. Fig. 2 is a longitudinal section ofthe same on the line 2 2, Fig. 1. Fig. 3 is a view looking into thelock, the face-plate thereof being removed. Fig. 4 is a vertical sectionof the lock with the check removed. Fig. 5 is a view showing the lockand check in an in clined position, such as it will assume when the caris in condition to dump its load and to permit the removal of the checkfrom the lock. Fig. 6 is a longitudinal sectional view through thecheck.

Referring to the drawings for a more particular description of myinvention, the numeral 1 designates the plate'for supporting the lock,said plate being provided with boltholes 2, by means of which theplateis secured to a mining-car, and the plate being bent outward, as at 3,away from the plane of the feet 4.

Secured to the plate by means of the rivets 5 is a lock composed ofinner section 7 and an outer section 8, said sections being interiorlyrecessed, as at 9, to form a seat for a spring 10, and from said recess9, extending outward to the periphery of the plates 7 and 8, is akey-recess 11, said recess being corrugated or provided with grooves andintermediate ribs, as shown more particularly in Fig. 2.

A curved groove 12 is formed in the two sections 7 and 8 of the lock,and mounted to move freely in said groove is a ball 13.

The check 14 consists of a disk having proj ected from one side thereofa corrugatedkey 15, said key having oppositely-beveled portions at theend thereof to fit the corresponding shape of the recess 11 in the lock,and the apex 16 of the key adapted to bear against the spring 10, andsaid spring exerting its tension to throw the key outward.

Formed in the key portion of the check is a curved slot 17, the upperwall of which is curved, as at 18.

tion of the key and check to limit the extent of the key within thelook, as will be understood.

From the foregoing it will be obvious that the key portion 15 of thecheck may be inserted in the lock and that owing to the beveled end ofthe key the ball 13 will be moved to one side within the groove 12 untilthe ball arrives at the curved portion 18 of the slot 17, when it willby gravity fall to the position shown in Fig. 3 and cannot be displaceduntil the car is in condition to dump its load or inclined to thepositionindicated in Fig. 5, when the ball will by gravity pass out ofthe slot 17 and permit the check to be withdrawn.

My invention may be produced at slight cost, is strong and durable, willhold a check in locked condition to the car, and cannot be removedtherefrom until the car is tipped to the required position to dump itsload. The corrugated recess 11 and corrugated key portion 15 effectuallyprevent the detachment of the check by means of a thin tool or deviceinserted into the slot 11 to move the ball laterally. With a smoothuncorrugated aperture and a smooth key a piece of paper could beinserted to move the ball 13 out of the slot 17. My lock cannot bepicked in this manner.

Having thus described the invention, what I claim is 1. In a device ofthe character described, a lock having a corrugated key-recess, and acurved groove extending into said recess, in combination with acorrugated key, said key having a curved slot, and a ball in saidgroove.

2. In a device of the character described, a lock having a corrugatedkey-recess and a curved groove, a spring within the look, a ball in saidgroove, a check having a projecting l corrugated key provided with aslot having a A flange or stop 19 is formed at the junccurved upperfail, and a flange to stop the 1 positoiy-beveied end and a slot,substantially key, substantially as described. as described. 10 3. In acheck-lock for mining-cars, a look In testimony whereof I :LI'IiX mysignature comprising two sections having an interrnein presence of twoWitnesses.

diate corrugated key-recess and a curved CHAS. A. CABELL.

groove, in spring, a bail in said groove, in key Witnesses:

having a check connected thereto, said key E. C. HANNA,

being corrugated and provided With an op- C. V. RoDEs.

